Domestic Discount Airlines

Allegiant AirPhone: (702) 505–8888Route MapHubs: Las Vegas, OrlandoWhere to Find Them: AllegiantAir.comTip: Based in Las Vegas, Allegiant Air flies to many smaller airports such as Bellingham, WA and Hagerstown, MD.

Frontier AirlinesPhone: (800) 432-1359Route MapHub: DenverWhere to Find Them: The major booking sites, aggregator sitesTip: Almost everything routes through Denver; check the weather. Frontier offers a number of flights to Mexico's most popular vacation destinations.

JetBlue AirwaysPhone: (800) 538-2583Route MapHubs: New York (JFK), Los Angeles/Long BeachWhere to Find Them: JetBlue fares are now available on major booking sites and aggregator sites.Tip: Rows 12 and back have more legroom on many planes in the fleet.

Southwest AirlinesPhone: (800) 435-9792Route MapHub: NoneWhere to Find Them: Southwest.comTip: Seats are not assigned, so check in as early as possible on the Southwest Web site before leaving for the airport to ensure that you get a priority A boarding pass.

Sun Country AirlinesPhone: (800) 359-6786)Route MapHub: Minneapolis/St. PaulWhere to Find Them: The major booking sites, aggregator sitesTip: Sun Country offers service to additional Mexico and Caribbean destinations in the winter and early spring.

Virgin AmericaPhone: (877) 359-8474Route MapWhere to Find Them: On its Web site, aggregator sitesTip: All planes have special "mood lighting" as well as interactive seat-back TV's; touch the screen to choose a movie, listen to music or even chat with other passengers onboard.